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| Study on outburst prediction sensitivity index of No.3 coal seam in Sihe Coal Mine |
| Guo Xin |
| Sihe Coal Mine, Jinneng Holdings Equipment Manufacturing Group Co., Ltd., Jincheng 048200, China |
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Abstract Based on the background of Sihe coal mine, the relationship between gas desorption amount and pressure at different time and the fitting relationship between K1 index, Δh2 index and pressure of drilling cuttings desorption were obtained by means of laboratory research on desorption law of coal samples. The mathematical model of sensitivity and critical value of gas outburst prediction index in No.3 coal seam of East well area was established, and the correctness of the mathematical model of outburst index was verified by setting measuring points on site.
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